//Author: Yiming
/*my first c program*
It is interesting!*/
#include "stdio.h"
int main()
{
    int a = 10, b = 20, c;
    printf("My First Program!\n");//comment 1
    printf("Hello!\n");           //comment 2
    c = a * b; /*add*/
    printf("%d/%d=%d\n", a, b, a / b); //comment 3
    return 0;
}